<!--
 * @Author: pengmingming
 * @Date: 2020-12-25 11:03:59
 * @LastEditors: pengmingming
 * @LastEditTime: 2020-12-25 11:15:34
 * @Description: 
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            margin: 0;
            height: 100vh;
            background: burlywood;
        }
        .box {
            border: 10px solid rgba(255, 255, 255, 0.3);
            width: 200px;
            height: 200px;
            background: white;
            background-clip: padding-box;
        }
    </style>
</head>
<body>
    <div class="box"></div>
</body>
</html>